Over the past three decades Drytech has carried out several waterproofing restorations of motorway tunnels on the Swiss N2 motorway, the main artery crossing the country from North to South.
The restoration system, based on expanding resin injections, sealed the seepages in cracks, joints and gravel nests.
Among others, Drytech has rehabilitated tunnels:
N2 Arisdorf tunnel – cracks, joints and gravel nests;
N2 Belchen tunnel, Dichten – passages, cracks and gravel nests;
N2 Hagnau Tunnel, Muttenz – passages and associated structures;
N2 Pratteln Tunnel, Liestal Schönthal – cracks, wall and ceiling joints;
N2 Lange Heid Tunnel, Münchenstein – movement joints;
N2 Dosso Taverne Tunnel – recess joints;
N2 Melide Grancia Tunnel – cracks and joints in the technical tunnel;
N2 Galleria Melide Grancia – cracks and joints in the summit part of the vault;
In addition, Drytech restored the portal of the Vedeggio Cassarate tunnel by sealing cracks.
